Junior Training Sheet V7.0-Topics

	A	B		C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q
1	ff	Problem Code		Status	Submit Count	Reading Time(m)	Thinking Time(m)	Coding Time(m)	Debug Time(m)	Total Time(m)	Problem Level /10	By yourself?	Category	1-2 line Comments about your approach is interesting?	Mostafa Category	Category Code	Level	Quality
2		AC Averages =>		0	0	0	0	0	0	0	0	0	0	0
3				This page has the SAME problems in (CF-A to CF-D3). It has problems categories, levels and quality (last 4 columns)
4				Some trainees don't like to train using Blind Order style (CF-A to CF-D3) and prefer Topics-Based style
5				This sheet page is another training style. Determine a category, go ahead and solve in order. Read Info Page. Read end of this page.
6
7	Vanya and Fence	CF677-D2-A								0				C++ Solution Example	adhoc, NA	1	0.5
8	Anton and Danik	CF734-D2-A								0				This is from Round 379. Here is the editorial	adhoc, NA	1	0.6
9	Petya and Strings	CF112-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
10	Is your horseshoe on the other hoof?	CF228-D2-A								0				Video Solution - Eng Ahmead Raafat (Python)	adhoc, NA	1	1
11	Team	CF231-D2-A								0				Video Solution - Eng Youssef Ali	adhoc, NA	1	1
12	Boy or Girl	CF236-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
13	Beautiful Matrix	CF263-D2-A								0				Video Solution - Eng Samed Hajajla	adhoc, NA	1	1
14	Colorful Stones (Simplified Edition)	CF265-D2-A								0				Video Solution - Eng Ahmead Raafat (Python)	adhoc, NA	1	1
15	Stones on the Table	CF266-D2-A								0				Video Solution - Eng Ahmead Raafat (Python)	adhoc, NA	1	1
16	Games	CF268-D2-A								0				Video Solution - Eng Yahia Ashraf	adhoc, NA	1	1
17	Word Capitalization	CF281-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
18	Magnets	CF344-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
19	Sereja and Dima	CF381-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
20	Gravity Flip	CF405-D2-A								0				Video Solution - Eng John Gamal	adhoc, NA	1	1
21	Police Recruits	CF427-D2-A								0				Video Solution - Eng Ahmead Raafat (Python)	adhoc, NA	1	1
22	Black Square	CF431-D2-A								0				Video Solution - Eng Ahmead Raafat (Python)	adhoc, NA	1	1
23	Word	CF59-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1
24	Night at the Museum	CF731-D2-A								0				Video Solution - Eng Yahia Ashraf	adhoc, NA	1	1
25	Buy a Shovel	CF732-D2-A								0				Video Solution - Eng Yahia Ashraf	adhoc, NA	1	1
26	Bear and Big Brother	CF791-D2-A								0				Video Solution - Eng Youssef El Ghareeb	adhoc, NA	1	1
27	Good Number	CF365-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc	1	1.5
28	Snow Footprints	CF298-D2-A								0				Video Solution - Dr Mostafa Saad	adhoc	1	1.5
29	String Task	CF118-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
30	Presents	CF136-D2-A								0				Video Solution - Eng Ahmed Rafaat (Python)	adhoc, NA	1	1.5
31	Next Round	CF158-D12-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
32	Twins	CF160-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
33	Dubstep	CF208-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
34	Mountain Scenery	CF218-D2-A								0				Video Solution - Eng John Gamal	adhoc, NA	1	1.5
35	Dice Tower	CF225-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	1.5
36	Fancy Fence	CF270-D2-A								0				Video Solution - Eng Omar Ashraf	adhoc, NA	1	1.5
37	Bit++	CF282-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
38	IQ Test	CF287-D2-A								0				Video Solution - Dr Mostafa Saad	adhoc, NA	1	1.5
39	Polo the Penguin and Segments	CF289-D2-A								0				Video Solution - Dr Mostafa Saad	adhoc, NA	1	1.5
40	Shaass and Oskols	CF294-D2-A								0				Video Solution - Dr Mostafa Saad	adhoc, NA	1	1.5
41	Yaroslav and Permutations	CF296-D2-A								0				Video Solution - Dr Mostafa Saad	adhoc, NA	1	1.5
42	Even Odds	CF318-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	1.5
43	Helpful Maths	CF339-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
44	Ksenia and Pan Scales	CF382-D2-A								0				Video Solution - Eng Samed Hajajla	adhoc, NA	1	1.5
45	Translation	CF41-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
46	Football	CF43-D2-A								0				Video Solution - Eng Belal Abdulnasser (Python)	adhoc, NA	1	1.5
47	Anton and Letters	CF443-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
48	Laptops	CF456-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
49	I Wanna Be the Guy	CF469-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
50	Keyboard	CF474-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
51	Counterexample	CF483-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
52	Calculating Function	CF486-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
53	Team Olympiad	CF490-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	1.5
54	Chewbaсca and Number	CF514-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	1.5
55	Pangram	CF520-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
56	Case of the Zeros and Ones	CF556-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
57	Lineland Mail	CF567-D2-A								0				Video Solution - Eng Ahmed Rafaat (Python)	adhoc, NA	1	1.5
58	Raising Bacteria	CF579-D2-A								0				Video Solution - Eng Ahmed Rafaat (Python)	adhoc, NA	1	1.5
59	Olesya and Rodion	CF584-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
60	Alyona and Numbers	CF682-D2-A								0				Video Solution - Eng John Gamal	adhoc, NA	1	1.5
61	Free Ice Cream	CF686-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
62	Young Physicist	CF69-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
63	Launch of Collider	CF699-D2-A								0				Video Solution - Eng Samed Hajajla	adhoc, NA	1	1.5
64	Brain's Photos	CF707-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
65	Way Too Long Words	CF71-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
66	Arpa’s hard exam and Mehrdad’s naive cheat	CF742-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
67	Mahmoud and Longest Uncommon Subsequence	CF766-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
68	Snacktower	CF767-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
69	Oath of the Night's Watch	CF768-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
70	New Password	CF770-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
71	Carrot Cakes	CF799-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
72	Panoramix's Prediction	CF80-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
73	Is it rated?	CF807-D2-A								0				Video Solution - Solver to be (Java)	adhoc, NA	1	1.5
74	Die Roll	CF9-D2-A								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	1.5
75	Electricity	UVA 12148								0				Learn Calender Leap Year	adhoc, calender, leap year	1	2	p1
76	Final Standings	TIMUS 1100								0				Stable sort exercise	adhoc, stable sort	1	2	p1
77	President's Office	CF6-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, stl	1	2
78	Sum of Digits	CF102-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
79	Meeting	CF144-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
80	Steps	CF152-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
81	Burglar and Matches	CF16-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
82	Growing Mushrooms	CF186-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
83	Olympic Medal	CF215-D2-B								0				Video Solution - Eng Ahmed Salah	adhoc, NA	1	2
84	Effective Approach	CF227-D2-B								0				Video Solution - Eng Abanob Ashraf	adhoc, NA	1	2
85	Roma and Changing Signs	CF262-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
86	Routine Problem	CF337-D2-B								0				Video Solution - Eng Mohamed Adel	adhoc, NA	1	2
87	Jeff and Periods	CF352-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
88	I.O.U.	CF376-D2-B								0				Video Solution - Eng Abanob Ashraf	adhoc, NA	1	2
89	Multitasking	CF384-D2-B								0					adhoc, NA	1	2
90	Bear and Strings	CF385-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
91	Inna and New Matrix of Candies	CF400-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
92	Mashmokh and Tokens	CF415-D2-B								0				Video Solution - Eng Salma Yehia	adhoc, NA	1	2
93	Pasha Maximizes	CF435-D2-B								0				Video Solution - Eng Hossam Yehia	adhoc, NA	1	2
94	DZY Loves Chemistry	CF445-D2-B								0				Video Solution - Eng Hussein Hesham	adhoc, NA	1	2
95	Suffix Structures	CF448-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
96	Chat Online	CF469-D2-B								0				Video Solution - Eng Mohamed Adel	adhoc, NA	1	2
97	Coins	CF47-D2-B								0				Video Solution - Eng Samed Hajajla	adhoc, NA	1	2
98	OR in Matrix	CF486-D2-B								0					adhoc, NA	1	2
99	Vasya and Wrestling	CF493-D2-B								0					adhoc, NA	1	2
100	Secret Combination	CF496-D2-B								0					adhoc, NA	1	2
101	Mr. Kitayuta's Colorful Graph	CF505-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
102	Fox And Two Dots	CF510-D2-B								0				Video Solution - Eng Mohamed Adel	adhoc, NA	1	2
103	Pasha and String	CF525-D2-B								0				Video Solution - Eng Hossam Yehia	adhoc, NA	1	2
104	Sea and Islands	CF544-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
105	Kefa and Company	CF580-D2-B								0				Video Solution - SolverToBe (Java)	adhoc, NA	1	2
106	Kolya and Tanya	CF584-D2-B								0				Video Solution - Eng Yahia Ashraf	adhoc, NA	1	2
107	Approximating a Constant Range	CF602-D2-B								0					adhoc, NA	1	2
108	Hamming Distance Sum	CF608-D2-B								0					adhoc, NA	1	2
109	Petya and Countryside	CF66-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
110	Bear and Finding Criminals	CF680-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
111	Filya and Homework	CF714-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2
112	Complete the Word	CF716-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
113	Easter Eggs	CF78-D2-B								0				Video Solution - Eng Abanob Ashraf	adhoc, NA	1	2
114	Hopscotch	CF141-D2-B								0					adhoc, NA	1	2
115	Physics Practical	CF253-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
116	Little Girl and Game	CF276-D2-B								0				Video Solution - Eng Hossam Yehia	adhoc, NA	1	2
117	Painting Eggs	CF282-D2-B								0					adhoc, NA	1	2
118	Fence	CF363-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhock, prefix sum	1	2
119	Valera and Contest	CF369-D2-B								0				Video Solution - Eng Yahia Ashraf	adhoc, NA	1	2
120	Han Solo and Lazer Gun	CF514-D2-B								0					adhoc, NA	1	2
121	Two Buttons	CF520-D2-B								0				Video Solution - Solver to be (Java)	adhoc, NA	1	2
122	Tavas and SaDDas	CF535-D2-B								0				Video Solution - Eng Abanob Ashraf	adhoc, NA	1	2
123	Preparing Olympiad	CF550-D2-B								0				Video Solution - SolverToBe (Java)	adhoc, NA	1	2
124	Lovely Palindromes	CF688-D2-B								0				Video Solution - Solver to be (Java)	adhoc, NA	1	2
125	Anatoly and Cockroaches	CF719-D2-B								0					adhoc, NA	1	2
126	Decoding	CF746-D2-B								0				Video Solution - Solver to be (Java)	adhoc, NA	1	2	p2
127	Bear and Friendship Condition	CF791-D2-B								0				Video Solution - Eng Mohamed Salah	adhoc, NA	1	2
128	Keyboard	CF88-D2-B								0				Video Solution - Eng Muntaser Abukadeja	adhoc, NA	1	2	p2
129	Kuriyama Mirai's Stones	CF433-D2-B								0					adhoc, prefix sum	1	2
130	Vika and Squares	CF610-D2-B								0					adhoc, prefix sum	1	2
131		CF1237-D12-B								0					adhoc, prefix sum	1	3	p3
132	Alyona and mex	CF740-D2-C								0				Video Solution - Dr Mostafa Saad	adhoc, constructive	1	3	p2
133		UVA 11053								0				Find O(n) Solution	adhoc, cycle detection for iterated function	1	3	p1
134	Karen and Coffee	CF816-D2-B								0					adhoc, prefix sum	1	4	p5
135		CF1043-D12-C								0					adhoc, constructive	1	4	p3
136		CF1075-D2-C								0					adhoc, constructive, sweep	1	4	p3
137		CF1237-D12-C2								0					adhoc, constructive	1	4	p3
138	Molly's Chemicals	CF776-D2-C								0				Video Solution - Solver to be (Java)	adhoc	1	4	p2
139	Number of Ways	CF466-D2-C								0				Video Solution - Solver to be (Java)	adhoc	1	4	p2
140		SPOJ TWINSNOW								0				Sol - text clarification	adhoc, canonical form, [unclear text]	1	4	p1
141		UVA 10920								0				Sol	adhoc, coordinate systems, math or simulation, [spiral grid]	1	4	p1
142		SRM381-D2-1000								0					adhoc, sorting, [bubble sort]	1	4	p1
143	Cutting Figure	CF194-D2-C								0					adhoc	1	4
144	Hacker, pack your bags!	CF822-D2-C								0				Video Solution - Solver to be (Java)	adhoc	1	4
145	Greg and Array	CF296-D2-C								0					adhoc, prefix sum	1	4
146		CF1066-D3-E								0					adhoc, string, math	1	4.25	p3
147	Almost Equal	CF1206-D2-C								0				Video Solution - Dr Mostafa Saad	adhoc, constructive	1	4.25	p3
148	Permutations	CF189-D2-C								0				Sol	adhoc	1	4.5
149		SRM274-D1-500								0					adhoc, canonical form, bf or greedy	1	4.5	p2
150	Array Division	CF808-D2-D								0				Video Solution - Solver to be (Java)	adhoc, string prefix	1	4.5	p1
151	Prime Permutation	CF124-D2-C								0					adhoc, constructive	1	4.5
152	Try and Catch	CF195-D2-C								0				Editorial - Eng Ahmed Osama	adhoc, string parsing	1	4.5
153	Title	CF59-D2-C								0					adhoc, string parsing	1	4.5
154		CF309-D1-C								0					adhoc, binary search, bitmasks or rmq	1	5	p3
155		SPOJ KOMPICI								0					adhoc, bitmasks, [=spoj iitkwpch]	1	5	p3
156	Lucky Transformation	CF122-D2-D								0					adhoc, impl	1	5	p3
157		SPOJ PARSUMS								0				Sol	adhoc, cyclic shifts, partial sum or segment tree	1	5	p2
158		CODECHEF OPPOSITE								0					adhoc	1	5	p2
159		SRM321-D1-500								0				See Rushiose's code in arena summary	adhoc, sorting, [print the smallest lexicographically]	1	5	p2
160	Fish Weight	CF298-D2-D								0					adhoc	1	5
161	Dividing Island	CF63-D2-D								0					adhoc	1	5
162	Median Smoothing	CF591-D2-C								0				Editorial	adhoc, constructive, impl	1	5
163		CF23-D12-C								0					adhoc, sortings, overflow	1	5.25	p3
164		CF101589-GYM-F								0				Sol	adhoc	1	5.75
165		Atcoder092-ARC-B								0					adhoc, bitmasks, binary search	1	6	p3
166	23 out of 5	UVA 10344								0				Video Solution - Eng Mohamed Nasser	backtrack	2	2
167	8 Queens Chess Problem	UVA 750								0				Video Solution - Eng Ayman Salah	backtrack	2	4
168	Graph Coloring	UVA 193								0				Video Solution - Dr Mostafa Saad	backtrack, graph, maximum independent set	2	4
169	Safe	CF47-D2-D								0					backtrack, datastructures, impl	2	5	p3
170	Jimmi's Riddles	UVA 10058								0				Sol	backtrack, expression parsing	3	4	p3
171	Grammar Evaluation	UVA 622								0				Sol	backtrack, expression parsing, [cnf]	3	5	p4
172	Help Vasilisa the Wise 2	CF143-D2-A								0				Video Solution - Eng John Gamal	bf	5	1.5
173	Gerald is into Art	CF560-D2-B								0					bf	5	2
174	Simple Game	CF570-D2-B								0					bf	5	2
175	Students and Shoelaces	CF129-D2-B								0				Video Solution - Eng Abanob Ashraf	bf	5	2
176	Balls Game	CF430-D2-B								0					bf, two pointers	5	3	p2
177	Cut Ribbon	CF189-D2-A								0				Video Solution - Solver to be (Java)	bf	5	3
178	Searching for Graph	CF402-D2-C								0					bf, constructive	5	3
179	Bulls and Cows	CF63-D2-C								0				Sol	bf, impl	5	4	p2
180	Almost Arithmetical Progression	CF255-D2-C								0					bf	5	4
181	Fancy Number	CF118-D2-C								0					bf or greedy	5	4
182	Recycling Bottles	CF672-D2-C								0					bf or greedy	5	4
183	Devu and Partitioning of the Array	CF439-D2-C								0					bf, constructive, impl	5	4
184	Football Championship	CF200-D2-C								0					bf, impl	5	4
185	Sereja and Algorithm	CF368-D2-C								0					bf, impl	5	4
186	Arthur and Table	CF557-D2-C								0					bf, datastructures	5	4.5
187		CF1036-D2-C								0					bf, combinatorics	5	4.5	p2
188	Matrix	CF365-D2-C								0					bf, math	5	4.5	p1
189	Removing Columns	CF496-D2-C								0				Video Solution - Dr Mostafa Saad	bf	5	4.5
190		UVA 12261								0					bf, [cases]	5	5	p3
191		UVA 10705								0				Sol	bf, prune, binary base, bitmasks	5	5	p3
192	Lucky Number 2	CF146-D2-D								0					bf, impl or greedy	5	5	p2
193	Levko and Array Recovery	CF361-D2-C								0					bf or greedy	5	5	p2
194		CF1017-D12-D								0					bf, bitmasks or dp_adhoc	5	5.5	p3
195		CF621-D2-D								0				Sol	bf, math, logs, [one solution use complex numbers]	5	5.5	p2
196		SRM513-D2-1000								0					bf or dp	5	5.5	p2
197		CF633-D12-D								0					bf, hashing, impl, [idea that functions like fibonacci grow very fast.]	5	5.5	p2
198		SRM525-D1-500								0					bf, graph, bitmasks	5	5.5	p3
199	Pipeline	CF287-D2-B								0				Video Solution - Dr Mostafa Saad	binary search	6	2.5
200	Vanya and Lanterns	CF492-D2-B								0				Video Solution - Solver to be (Java)	binary search, doubles	6	2.5	p2
201	Aggressive cows	SPOJ AGGRCOW								0				Video Solution - Eng Youssef El Ghareeb	binary search	6	3
202	Hanoi Tower Troubles !	UVA 10276								0				Video Solution - Eng Mahmoud Adel	binary search or simulation	6	3.5
203	The Stern-Brocot Number	UVA 10077								0					binary search, gcd	6	3.5
204	Magical Boxes	CF270-D2-C								0					binary search, greedy, math, impl	6	4	p3
205	Image Preview	CF651-D2-D								0					binary search, bf, left-right trick	6	4	p2
206	Sagheer and Nubian Market	CF812-D2-C								0				Video Solution - Solver to be (Java)	binary search	6	4
207	The Playboy Chimp	UVA 10611								0				Video Solution - Eng Ayman Salah	binary search	6	4
208	Modified GCD	CF75-D2-C								0				Video Solution - Dr Mostafa Saad	binary search, math	6	4	p2
209	Dictionary Subsequences	SPOJ DICTSUB								0				Sol	binary search, lower bound	6	4.5	p2
210	Mr. Bender and Square	CF255-D2-D								0					binary search	6	4.5	p1
211		CF1060-D12-C								0					binary search, two pointers, armortized analysis	6	5	p3
212	Multiplication Table	CF448-D2-D								0				Video Solution - Solve to be (Java)	binary search	6	5	p2
213	Garland	UVA 1555								0				Sol	binary search, math or formula	6	5	p3
214		SPOJ ABA12E								0				Sol	binary search, [counting subarrays with sum k]	6	5.5	p3
215	Showstopper	SPOJ MSE07E								0				Read SPOJ users' comments about IO. See here sol	binary search, d&c, [issues in io, seems diffcult, but easy sol]	6	6	p3
216		SRM319-D1-500								0					bst, greedy, combinatorics	8	5.5	p2
217		SPOJ POSTERIN								0				Sol	datastructures, stack	9	3	p4
218	Knight Tournament	CF357-D2-C								0					datastructures, set	9	3
219		LiveArchive 8078								0				Sol	datastructures, stack or dp, [count the longest balanced brackets sequence]	9	4	p4
220	Queue	CF92-D2-D								0					datastructures, grid compress	9	4	p2
221	Thor	CF705-D2-C								0					datastructures, impl	9	4	p2
222	Database	UVA 1592								0					datastructures, multimap, hashing, bf	9	4	p2
223	Little Girl and Maximum Sum	CF276-D2-C								0					datastructures, impl, sortings	9	4
224	Anya and Smartphone	CF518-D2-C								0					datastructures, impl	9	4.5
225	Lorenzo Von Matterhorn	CF697-D2-C								0					datastructures, impl, trees	9	4.5
226	Weird Function	SPOJ WEIRDFN								0				Sol	datastructures, heap, min_max heaps, [restricted tl, pq faster than multiset]	9	5	p4
227	Black Box	UVA 501								0				Sol - Must Read	datastructures, heap, min_max or bbst or segment tree	9	5	p2
228	The SetStack Computer	LiveArchive 3634								0				Sol	datastructures, sets intersections and union	9	5	p2
229		CF899-D2-E								0					datastructures, lists or sets merging	9	5.5	p3
230	Mike and Feet	CF548-D2-D								0					datastructures, stack or rmq or segment tree	9	5.5	p2
231	Boxes in a Line	UVA 12657								0				Sol	datastructures, linked list, impl	9	5.5	p1
232	Expressions	UVA 11234								0				Sol	datastructures, stack & queue	9	6	p2
233		UVA 11997								0				Sol	datastructures, heap, [counting subarrays with sum k, solve spoj aba12e first]	9	6.25	p4
234	Cutting Sticks	UVA 10003								0					dp, [use scanf, you may need to avoid memset or use table methd]	10	3	p2
235	Dividing coins	UVA 562								0				Video Solution - Eng Ayman Salah	dp	10	3
236	Vacation	UVA 10192								0				Explained in the tutorial videos	dp, lcs	10	3
237	Divisibility	UVA 10036								0				Sol	dp, math	10	3
238	Longest Match	UVA 10100								0				Sol	dp, lcs	10	3.5
239		CF1057-D12-C								0					dp, 2d grid	10	4	p2
240	Alternative Thinking	CF604-D2-C								0					dp or greedy	10	4	p2
241	String to Palindrome	UVA 10739								0				Explained in the tutorial videos	dp	10	4
242	Trouble of 13-Dots	UVA 10819								0					dp, [knapsack]	10	4
243	Woodcutters	CF545-D2-C								0					dp, dp_memo	10	4
244	Counting	UVA 10198								0				Needs Big Integer: Have it in your cpp library or learn Java for these (rare) cases	dp, graph, cc	10	4
245	Given Length and Sum of Digits...	CF489-D2-C								0					dp, greedy, impl	10	4
246	Strategic Defense Initiative	UVA 497								0				Explained in the tutorial videos	dp, lis, [direct lis]	10	4
247	Hard problem	CF706-D2-C								0					dp	10	4.5	p1
248	Boredom	CF456-D2-C								0					dp	10	4.5
249	Coloring Trees	CF711-D2-C								0				Video Solution - Solver to be	dp	10	4.5
250	Again Palindrome	UVA 10617								0				Sol to read	dp	10	4.5
251	Scheduling Lectures	UVA 607								0				Sol	dp	10	4.5
252	Divide by Three	CF792-D2-C								0				Video Solution - Solver to be (Java)	dp, dp_memo or greedy	10	4.5
253	Wavio Sequence	UVA 10534								0				Sol	dp, lis efficient, lis indices or segment tree	10	5	p3
254	Good Sequences	CF265-D2-D								0					dp, sieve, binary search	10	5	p3
255	Dima and Salad	CF366-D2-C								0					dp, knapsack	10	5	p2
256		CF101-D1-B								0				Sol	dp, datastructures or binary search, impl	10	5	p2
257	Bubble Sort Graph	CF340-D2-D								0					dp, lis, onlogn, reduce to efficient lis or dp, bit	10	5	p2
258		CF506-D1-A								0					dp, observation	10	5	p2
259	Barcode	CF225-D2-C								0				Video Solution - Dr Mostafa Saad	dp	10	5
260	Vacations	CF699-D2-C								0					dp	10	5
261	Greenhouse Effect	CF270-D2-D								0					dp, lcs, analysis	10	5
262	Journey	CF721-D2-C								0					dp, graph or dijkstra	10	5	p2
263		CF264-D1-C								0					dp, [non standard]	10	5.5	p4
264	Cow Program	CF284-D2-D								0					dp, analysis	10	5.5	p3
265		CF1066-D3-F								0					dp, cases	10	5.5	p3
266	Optimal Array Multiplication Sequence	UVA 348								0				Sol	dp, mcm	10	5.5	p3
267		SRM569-D2-1000								0					dp, primes	10	5.5	p3
268	Ilya and Roads	CF313-D2-D								0					dp, tree	10	5.5	p3
269		TIMUS 1156								0					dp, bicoloring, is bipartite	10	5.5	p2
270	Coloring Brackets	CF149-D2-D								0				Sol	dp, dp_conting, dp_ranges	10	5.5	p2
271		CF1012-D1-C								0					dp, [non standard]	10	5.5	p2
272		CF623-D1-B								0					dp, gcd	10	5.75	p4
273		CF1072-D2-D								0					dp, greedy	10	5.75	p3
274		CF1025-D2-D								0					dp, d&c	10	6	p2
275		FbHkrCup 18-R1-A								0					dp, dp_adhoc, [non standard]	11	5	p2
276	Kefa and Dishes	CF580-D2-D								0				Video Solution - Solver to be	dp, dp_bitmasks	13	4	p2
277	Permutations	SPOJ PERMUT1								0					dp, dp_bitmasks	13	4	p2
278	Assignments	SPOJ ASSIGN								0					dp, dp_bitmasks	13	4	p1
279	Pebble Solitaire	UVA 10651								0					dp, dp_bitmasks	13	4	p1
280		UVA 11825								0				Sol	dp, dp_bitmasks, mask-all-subsets, [direct practice on mask-all-subsets]	13	5	p2
281	Nuts for nuts	UVA 10944								0					dp, dp_bitmasks, tsp or bfs, impl	13	5
282	Random Task	CF431-D2-D								0					dp, dp_bitmasks, binary search or adhoc	13	5.5	p3
283	Shopping Trip	UVA 11284								0				Sol	dp, dp_bitmasks, floyd	13	6
284	Gone Fishing	UVA 757								0				Sol to read	dp, dp_build_output	15	3
285	Make Palindrome	UVA 10453								0				Sol	dp, dp_build_output, [similar to edit distance]	15	3.5	p3
286	Fast Food	UVA 662								0					dp, dp_build_output	15	4.5	p2
287	Palindromic Subsequence	UVA 11404								0					dp, dp_build_output	15	4.5
288	Unidirectional TSP	UVA 116								0					dp, dp_build_output	15	4.5
289	Changing a String	CF56-D2-D								0					dp, dp_build_output, [edit distance]	15	4.5
290	Caesar's Legions	CF118-D2-D								0					dp, dp_counting	18	3
291	UnsealTheSafe	SRM354-D2-1000								0					dp, dp_counting	18	3
292	k-Tree	CF431-D2-C								0				Video Solution - Solver to be (Java)	dp, dp_counting, dp_trees	18	3.5
293	DiceGames	SRM349-D1-500								0					dp, dp_counting	18	4	p2
294	Flowers	CF474-D2-D								0				Video Solution - Solver to be (Java)	dp, dp_counting	18	4.5	p2
295		SRM428-D2-1000								0					dp, dp_counting or perm, adhoc	18	5	p2
296		SRM144-D1-500								0					dp, dp_counting or math, combinatorics	18	5
297		SRM514-D1-500								0					dp, dp_counting, dp_bitmasks	18	6.25	p4
298	Little Girl and Maximum XOR	CF276-D2-D								0				See editorials	dp, dp_digit or impl	22	4.5	p1
299	Roman and Numbers	CF401-D2-D								0					dp, dp_digit, dp_bitmasks or adhoc	22	5	p3
300	Find Pair	CF160-D2-C								0					dp, dp_digit or binary search	22	5
301	BagsOfGold	SRM228-D1-500								0					dp, dp_games, minimax	23	3	p3
302	Bachet's Game	UVA 10404								0				Sol	dp, dp_games	23	3
303	RowAndCoins	SRM522-D1-250								0					dp, dp_games, dp_bitmasks or adhoc	23	3
304		CF1033-D12-C								0					dp, dp_games, [harmonic progression]	23	4	p3
305	EllysCheckers	SRM534-D1-250								0					dp, dp_games, dp_bitmasks or game theory	23	4
306	Bag of mice	CF148-D2-D								0					dp, dp_games, dp_probability	23	4.5	p2
307	The Game of 31	UVA 10578								0				Sol	dp, dp_games	23	4.5
308	Find the Winning Move	UVA 10111								0				Sol	dp, dp_games or backtrack, minmax (alpah beta)	23	5.5	p3
309	Tennis contest	UVA 12457								0				Sol	dp, dp_probability or probability	29	3.5
310	First Digit Law	CF54-D12-C								0					dp, dp_probability	29	4	p2
311	France '98	UVA 542								0				Sol	dp, dp_probability, [=pku 3071]	29	4.5	p3
312	Bad Luck Island	CF540-D2-D								0					dp, dp_probability	29	4.5	p2
313	TestBettingStrategy	SRM339-D1-500								0					dp, dp_probability	29	4.5	p2
314	Dice Throwing	UVA 10759								0				Sol	dp, dp_probability, counting style	29	4.5	p2
315	Wizards and Huge Prize	CF168-D2-D								0					dp, dp_probability	29	4.5
316		CF28-D12-C								0					dp, dp_probability, combinatorics or adhoc	29	5	p3
317	Check the difficulty of problems	PKU 2151								0				Sol	dp, dp_probability	29	5	p3
318		CF16-D2-E								0					dp, dp_probability, dp_table, masks	29	5	p3
319	Let’s Dance	UVA 10218								0				Sol	dp, dp_probability or combinatorics	29	5	p1
320	Tribbles	UVA 11021								0				Sol	dp, dp_probability, dp_table, [independece property, prove correctness?]	29	5.5	p3
321	Collecting Bugs	PKU 2096								0				Sol	dp, dp_probability or math, [hard text for few]	29	5.5	p2
322	Winning Streak	UVA 11176								0				Sol	dp, dp_probability	29	6
323	Creating Palindrome	UVA 11753								0				Video Solution - Eng Aya Elymany	dp, dp_ranges, lcs or backtrack	32	4.5	p3
324		CF101294-GYM-I								0				Sol	dp, dp_ranges	32	4.5	p1
325		SRM441-D1-250								0					dp, dp_ranges, [consective ranges, cyclic permutation] or bf	32	5	p2
326		SRM536-D2-1000								0					dp, dp_ranges, [consective ranges]	32	5	p1
327	MessageMess	SRM149-D1-500								0					dp, dp_ranges, impl, [consective ranges]	32	5
328		SRM555-D2-1000								0					dp, dp_ranges, [consective ranges]	32	5
329		SRM558-D1-250								0					dp, dp_ranges, [consective ranges] or bf	32	5.5	p2
330	Exploring Pyramids	UVA 1362								0				Video Solution - Eng Ayman Salah	dp, dp_ranges	32	5.5
331	Brackets sequence	UVA 1626								0				Sol	dp, dp_ranges	32	5.5
332		SRM509-D1-500								0					dp, dp_ranges, floyd, [cases]	32	6	p4
333		UVA 507								0					dp, dp_subrectangle, 1d, [more direct uva 12640]	36	3
334		UVA 10667								0					dp, dp_subrectangle, 2d	36	3
335	Big Maximum Sum	CF75-D2-D								0					dp, dp_subrectangle, 2d, [actually greedy version]	36	5	p2
336		SPOJ FISHES								0				Sol	dp, dp_subrectangle, 2d, observations, dot product, largest rectangle general, [author: mostafa saad - i am authot.the math equations are for an important observation in linear svm]	36	5.5	p3
337	Reberland Linguistics	CF667-D2-C								0					dp, dp_table	37	4.5	p3
338	Red-Green Towers	CF478-D2-D								0					dp, dp_table, dp_roll	37	5	p3
339	Cunning Gena	CF418-D1-B								0					dp, dp_table, dp_roll, dp_bitmasks, sortings	37	5.5	p4
340		ZOJ 3305								0				Sol	dp, dp_table or dp_bitmasks, all submasks of a mask, [if don't know the trick: https://ideone.com/p1vj81]	37	5.5	p4
341	An overnight dance in discotheque	CF814-D2-D								0				Video Solution - Solver to be (Java)	dp, dp_trees, geometry or greedy	38	5	p3
342		CF161-D12-D								0				Reading: DP on Trees	dp, dp_trees or dsu-on-trees	38	5	p2
343	Vertex Cover	SPOJ PT07X								0				Sol	dp, dp_trees	38	5
344		CF337-D2-D								0				Sol	dp, dp_trees or diameter like, [tricky to guess its level]	38	5.5	p4
345	Chloe and pleasant prizes	CF743-D2-D								0					dp, dp_trees	38	5.5	p2
346		Timus 1362								0				Sol	dp, dp_trees or greedy	38	5.5	p2
347		UVA 1218								0				Sol	dp, dp_trees, [vertex cover releated]	38	5.75	p2
348	Playing Cubes	CF257-D2-B								0					game theory, greedy	41	2.5
349	Euclid's Game	UVA 10368								0				Video Solution - Eng Moaz Rashad	game theory, gcd, dfs or pattern, [why each time if i have multiple branches from the current state i can win, why always there is a win leaf state for me if i have multiple branches from the current state?]	41	3.5	p2
350		CF1220-D12-C								0					game theory, adhoc	41	3.5	p2
351	Alice and Bob	CF347-D2-C								0				Video Solution - Eng Mohamed Nasser	game theory, gcd	41	4	p1
352	Win or Freeze	CF151-D2-C								0				Video Solution - Dr Mostafa Saad	game theory, divisors, greedy	41	4	p1
353	Brownie Points	UVA 10865								0				Video Solution - Eng Magdy Hasan	geometry	45	2	p1
354		SRM436-D2-500								0					geometry, [slopes comparison]	45	3	p1
355	Points in Figures: Rectangles	UVA 476								0					geometry	45	3
356	Watering Flowers	CF617-D2-C								0					geometry, bf	45	3
357	Pouring Rain	CF667-D2-A								0					geometry, physics	45	3
358	Fourth Point !!	UVA 10242								0				Video Solution - Eng Magdy Hasan	geometry, vectors addition	45	3
359	Captain Marmot	CF474-D2-C								0				Video Solution - Dr Mostafa Saad	geometry, check square, point rotation, bf	45	3.5	p2
360	Overlapping Rectangles	UVA 460								0				Video Solution - Eng Muntaser Abukadeja	geometry	45	3.5
361	Xrange's Pancakes	HACKR xrange-and-pizza								0				Sol	geometry, adhoc	45	4	p2
362		HACKR a-circle-and-a-square								0					geometry, ccw, parametric equ, in circle	45	4	p2
363		SPOJ FACENEMY								0				Sol	geometry, angles, precision	45	4	p1
364	k-Multiple Free Set	CF275-D2-C								0					geometry	45	4
365	Gerald's Hexagon	CF560-D2-C								0					geometry	45	4
366	View Angle	CF257-D2-C								0				Editorial - Eng Ahmed Osama	geometry, angles	45	4
367	Watchmen	CF651-D2-C								0					geometry, datastructures	45	4
368	Bicycle Race	CF659-D2-D								0					geometry, impl, [very nice, o(1) and o(n) solutions]	45	4.5	p3
369	Pyramids	SPOJ PIR								0				Sol	geometry, formula or matrix determinant	45	4.5	p1
370	Pythagorean Triples	CF707-D2-C								0					geometry, triangles, formula	45	4.5	p2
371		SPOJ BILLIARD								0				Sol	geometry, angles, physics	45	5
372	Cupboard and Balloons	CF342-D2-C								0					geometry	45	5	p3
373		CF1064-D2-E								0					geometry, binary search, interactive	45	5	p3
374		CF961-D12-D								0					geometry	45	5	p2
375		CF101917-D12-E								0					geometry, [ppl scared in contest, but easy]	45	5	p2
376		CF552-D2-D								0					geometry, bf, counting, treemaps	45	5	p2
377		CF1016-D2-E								0					geometry, binary search	45	5	p2
378		CF1058-D2-D								0					geometry, triangles, number theory	45	5	p2
379		UVA 1342								0				Sol	geometry, plane graph	45	5
380		CF101864-GYM-L								0				Sol	geometry, binary search or bf, greedy	45	5.5	p3
381		CF80-D2-D								0					geometry, probability or algebra	45	5.5	p2
382		UVA 11648								0				Sol	geometry, trapezoid formula, binary search or analytical	45	6	p2
383		UVA 1333								0				Sol - Text/Background Clarification	geometry, triangles, angles, parallelogram law, quadratic equations	45	6	p1
384	Hit Ball	CF203-D2-D								0					geometry, 3d, impl, math, [physics, kinematics]	46	5	p2
385		UVA 453								0				Learn Handling Precisions	geometry, circles, [direct circle intersection, but precision]	47	2
386	Wifi Access	UVA 12748								0				Sol	geometry, circles, distances	47	2
387	Rings and Glue	UVA 10301								0				Sol	geometry, circles, dsu	47	3	p1
388	Square Pegs And Round Holes	UVA 356								0				Sol to read	geometry, circles	47	3
389	The Circumference of the Circle	UVA 438								0				Sol	geometry, circles	47	3
390	Points in Figures: Rectangles and Circles	UVA 477								0				Sol	geometry, circles	47	3.5
391	Special Olympics	CF199-D2-B								0					geometry, circles, impl	47	4
392	Biathlon	CF84-D2-C								0					geometry, circles, impl	47	4
393	Packing polygons	UVA 10005								0				Sol	geometry, circles, polygon, [polyon inside poly]	47	5	p4
394		SRM473-D1-500								0					geometry, circles, triangles, thales' theorem, search	47	5	p3
395		SPOJ ALIENS								0				Sol - Practice on min enclosing circle	geometry, circles, min enclosing circle, [=spoj qcj4]	47	5	p2
396		CF1059-D2-D								0					geometry, circles, binay search	47	5.25	p3
397		HACKR house-location								0				Sol	geometry, circles, algebra, impl	47	5.5	p3
398		UVA 10180								0				Sol	geometry, circles, tangents, point on segment, precision	47	5.5	p2
399	Railway	UVA 10263								0				Sol to read	geometry, lines, distances, [=uva 460]	48	3	p3
400	Lining Up	UVA 270								0				Video Solution - Eng Mohamed Nasser. Don't Code O(N^3)	geometry, lines, line up	48	3	p3
401	Campus Roads	UVA 11473								0				Sol	geometry, lines, distances, impl	48	3	p2
402	Polyline	CF617-D2-D								0					geometry, lines, impl	48	3
403	Jack Straws	UVA 273								0				Sol	geometry, lines, intersection, shortest path	48	3
404	Isolated Segments	UVA 11343								0				Sol	geometry, lines, intersections	48	3
405	Intersecting Lines	UVA 378								0					geometry, lines	48	3.5
406		SRM373-D2-1000								0				Sol	geometry, lines, lines intersection, rectangles, bf	48	4
407	Intersecting Line Segments	UVA 866								0				Sol	geometry, lines, intersections	48	4
408		SRM368-D1-500								0				Sol	geometry, lines, polyline intersection, bf, na??	48	4
409	Gleaming the Cubes	UVA 737								0				Sol	geometry, lines, intersections	48	4
410	Water Falls	UVA 833								0				Sol	geometry, lines, distances, adhoc	48	4	p3
411	How Many Points of ?	UVA 10790								0				Sol	geometry, lines, intersections, counting, formula, [incremental thinking]	48	4	p1
412	River Crossing	UVA 10514								0				Sol	geometry, lines, distances, floyd	48	5
413	BestTriangulation	SRM278-D2-500								0					geometry, polygon, area, [just triangle areas]	49	2
414	Triangle	CF408-D2-C								0					geometry, polygon	49	4
415		UVA 11665								0				Sol	geometry, polygon, pip, polygons intersection, dsu	49	4
416		TIMUS 1599								0				Sol	geometry, polygon, pip, winding numbers, [precision: use int as possible, bad statement?]	49	4.5	p1
417		UVA 881								0				Sol	geometry, polygon, pip, polygons inside polygons	49	4.5
418		CF340-D2-B								0					geometry, polygon, bf	49	5	p2
419	Volatile Kite	CF801-D2-D								0				Sol	geometry, polygon, binary search	49	5	p2
420	Polygons	UVA 137								0				Sol	geometry, polygon, pip, intersections or convex hull or polygon cut	49	5.5	p3
421	Area	TJU 1011								0				Sol	geometry, polygon, pick's theorem	52	4.5	p1
422	Trees on My Island	UVA 10088								0					geometry, polygon, pick's theorem, gcd	52	5
423		LIVEARCHIVE 2831								0				Use polygon cut	geometry, polygon, polygon cut	53	4
424	Video Surveillance	UVA 588								0				Use polygon cut	geometry, polygon, polygon cut or adhoc	53	6	p5
425	The Skyline Problem	UVA 105								0					greedy, geometry		3
426	Marcus	UVA 10452								0				Video Solution - Eng Ayman Salah	graph	55	3
427	Trees on the level	UVA 122								0				Video Solution - SolverToBe (Java)	graph, trees	55	3
428	PT07Z	SPOJ PT07Z								0				Sol	graph, tree diameter	55	3
429	Roads in the North	UVA 10308								0				Sol	graph, tree diameter	55	3
430		CF1068-D2-C								0					graph, adhoc	55	4	p2
431	Eternal Victory	CF61-D2-D								0					graph, greedy	55	4	p2
432	Is It A Tree?	UVA 615								0					graph, trees	55	4	p1
433	Mahmoud and Ehab and the wrong algorithm	CF959-D2-C								0				Video Solution - Eng Mohamed Salah	graph, trees, constructive	55	4
434	Central Post Office	UVA 12379								0				Sol	graph, tree diameter	55	4
435	The Tree Root	UVA 10459								0				Sol	graph, tree diameter	55	4.5	p3
436	Xor-tree	CF430-D2-C								0					graph, bf	55	5
437	Renting Bikes	CF363-D2-D								0					graph, cycle, greedy	55	5
438	Regular Bridge	CF550-D2-D								0					graph, prove using e.g. scc	55	5
439		CF486-D2-D								0					graph, trees, dfs, prefix sum or dp_trees	55	5.5	p5
440	Cycles	CF233-D2-C								0					graph, cycle	55	5.5	p3
441		CF459-D2-E								0					graph, dp, sortings	55	5.5	p3
442		CF1060-D12-D								0					graph, greedy	55	5.5	p3
443		UVA 10982								0				Sol	graph, greedy, [close to max cut]	55	5.5	p3
444		CF592-D2-D								0					graph, tree diameter	55	5.5	p3
445	BITMAP - Bitmap	SPOJ BITMAP								0				Editorial	graph, bfs, multisrc, multidest	57	3	p3
446	Pouring water	SPOJ POUR1								0				Video Solution - Eng Moaz Rashad	graph, bfs	57	3
447	Jugs	UVA 571								0				Video Solution - Dr Mostafa Saad	graph, bfs	57	4	p1
448	Tic-Tac-Toe ( I )	SPOJ TOE1								0				Video Solution - Eng Ayman Salah	graph, bfs	57	4
449	Tic-Tac-Toe ( II )	SPOJ TOE2								0				Video Solution - Eng Essam AlNaggar	graph, bfs	57	4
450	Knight Moves	UVA 439								0				Video Solution - Eng Magdy Hasan	graph, bfs, chess or dfs	57	4
451	King's Path	CF242-D2-C								0				Video Solution - Dr Mostafa Saad	graph, bfs	57	4.5
452	Theseus and labyrinth	CF676-D2-D								0					graph, bfs, impl	57	4.5	p2
453	Wandering Queen	SPOJ QUEEN								0				Sol to read	graph, bfs	57	4.5	p1
454	Restore Graph	CF404-D2-C								0					graph, bfs	57	4.5
455	Key Task	SPOJ CERC07K								0					graph, bfs, bitmask	57	4.5
456	Cleaning Robot	SPOJ CLEANRBT								0					graph, bfs, bitmask or bfs preprocess then dp	57	4.5
457		UVA 10888								0					graph, bfs, dp or weighted matching	57	5	p3
458	Text Editor	CF253-D2-C								0					graph, bfs or greedy, [search in 2d grid]	57	5	p2
459	Tobo or not Tobo	SPOJ ANARC08A								0				Sol	graph, bfs, trie, hashing or meet in middle	57	5
460		CF1005-D3-F								0					graph, bfs	57	5.25	p2
461		TIMUS 1498								0					graph, bfs, [chess, tricky cases]	57	5.5	p2
462		UVA 11573								0				Learn 0/1 BFS	graph, bfs, 0/1 bfs, [~spoj kaththi]	57	5.5	p2
463		CF787-D2-C								0					graph, bfs, cyclic games	57	5.5	p1
464		CF811-D2-D								0					graph, bfs, interactive	57	6	p2
465		UVA 10461								0					graph, dfs, [finish computation times]	60	3	p1
466	Roads in Berland	CF25-D2-C								0					graph, dfs	60	4	p2
467	Party	CF116-D2-C								0					graph, dfs	60	4	p1
468	Forming Teams	CF216-D2-B								0				Video Solution - Dr Mostafa Saad	graph, dfs	60	4
469	Block Tower	CF327-D2-D								0					graph, dfs	60	4
470	Soldier and Cards	CF546-D2-C								0					graph, dfs	60	4
471	Kefa and Park	CF580-D2-C								0				Video Solution - Solver to be (Java)	graph, dfs	60	4	p2
472	Maze	CF378-D2-C								0					graph, dfs, [reverse thinking]	60	4.5	p1
473	Exchange Rates	UVA 10113								0					graph, dfs, impl	60	4.5	p1
474	Ice Cave	CF540-D2-C								0					graph, dfs	60	4.5
475	Ordering	UVA 872								0				Sol	graph, dfs	60	4.5
476	Directed Roads	CF711-D2-D								0					graph, dfs, combinatorics, formula	60	5	p3
477		SPOJ BIA								0				Sol	graph, dfs or directed articulation points algorithm	60	5	p2
478	Choosing Capital for Treeland	CF219-D2-D								0					graph, dfs or dp_trees	60	5
479		CF1075-D2-D								0					graph, dfs, interactive	60	5.5	p3
480	Infinite Maze	CF197-D2-D								0					graph, dfs	60	5.5
481	Cycle in Graph	CF263-D2-D								0					graph, dfs	60	5.5
482	T-decomposition	CF237-D2-D								0					graph, dfs, greedy	60	5.5
483	Robbery	UVA 707								0				Sol	graph, dfs or dp	60	5.75
484	Persistent Bookcase	CF707-D2-D								0				Sol	graph, dfs, bitset or persistent segment tree	60	6	p3
485	Moodular Arithmetic	CF604-D2-D								0				Sol	graph, dfs, fermat, [rearangement propperty or congruence]	60	6	p2
486	The Seasonal War	UVA 352								0				Video Solution - Eng Mohamed Nasser	graph, dfs, flood-fill	61	2
487	Battleships	UVA 11953								0				Video Solution - Eng Aya Elymany	graph, dfs, flood-fill	61	3.5
488	Maze Exploration	UVA 784								0				Video Solution - Eng Mahmoud Adel	graph, dfs, flood-fill	61	3.5
489	Continents	UVA 11094								0				Video Solution - Eng Ayman Salah	graph, dfs, flood-fill	61	4
490		SRM297-D1-500								0					graph, dfs, flood-fill or bfs, bf	61	5	p3
491	Equivalent Strings	CF560-D2-D								0				Sol to learn	graph, dfs, isomorphism or d&c, hashing	62	4	p2
492	Subway tree systems	LIVEARCHIVE 2935								0				Sol	graph, dfs, isomorphism, canonical form or adhoc decomposition	62	4.5	p4
493	Hierarchy	SPOJ MAKETREE								0				Video Solution - Eng Yahia Ashraf	graph, dfs, topological sort	63	2
494	Ordering Tasks	UVA 10305								0				Video Solution - Eng Yahia Ashraf	graph, dfs, topological sort	63	3
495		SRM419-D2-1000								0					graph, dfs, topological sort, cycles	63	4
496	Spreadsheet	UVA 196								0				Sol	graph, dfs, topological sort or dp	63	4	p3
497	Rankings	UVA 12263								0				Sol	graph, dfs, topological sort	63	4	p2
498	Pick up sticks	UVA 11686								0				Sol	graph, dfs, topological sort, detect cycles	63	4
499		SRM550-D2-1000								0					graph, dfs, topological sort	63	5	p3
500	Robot Rapping Results Report time	CF645-D12-D								0					graph, dfs, topological sort, binary search	63	5	p3
501	Gifts by the List	CF681-D2-D								0					graph, dfs, topological sort, impl	63	5	p2
502	Sagheer and Kindergarten	CF812-D2-D								0				Sol	graph, dfs, topological sort or euler, [https://www.youtube.com/watch?v=o7bnky7weto]	63	6	p4
503	Shopping	SPOJ SHOP								0					graph, dijkstra	64	3
504	Sending email	UVA 10986								0					graph, dijkstra	64	3
505	MELE3	SPOJ MELE3								0				Sol	graph, dijkstra	64	4.5
506	Roads	SPOJ ROADS								0				Sol	graph, dijkstra or dp	64	4.5	p3
507	Lift Hopping	UVA 10801								0					graph, dijkstra	64	4.5
508		UVA 10740								0				Sol	graph, dijkstra, kth sp. [k <= 10]	64	5	p3
509	Volleyball	CF96-D2-D								0					graph, dijkstra, 2 dijkstra	64	5	p3
510		UVA 12047								0				Sol	graph, dijkstra	64	5.5	p3
511		UVA 10342								0				Sol - read the statement clarification	graph, dijkstra, kth sp (k=2) or floyd	64	5.5	p3
512	Hotel booking	UVA 11635								0				Sol	graph, dijkstra	64	5.5
513	IP-TV	UVA 1174								0					graph, dsu	65	2
514	Count the Faces.	UVA 10178								0				Read first Euler Formula	graph, dsu or dfs, cycles	65	4	p2
515	Learning Languages	CF278-D2-C								0					graph, dsu	65	4
516	Virtual Friends	UVA 11503								0				Video Solution - Eng Moaz Rashad	graph, dsu	65	4
517	Almost Union-Find	UVA 11987								0				Sol	graph, dsu	65	4.5	p3
518	Cthulhu	CF104-D2-C								0					graph, dsu	65	4.5
519	The Child and Zoo	CF437-D2-D								0					graph, dsu	65	5
520	Mahmoud and a Dictionary	CF766-D2-D								0				Video Solution - Solver to be (Java)	graph, dsu, [offline processing]	65	5	p3
521		CF1012-D1-B								0					graph, dsu	65	5.25	p2
522		UVA 12128								0					graph, dsu, dijkstra like or binary search, bfs	65	5.5	p2
523	Connected Components	CF292-D12-D								0					graph, dsu	65	5.75	p3
524	Trip Routing	UVA 186								0				Sol	graph, floyd, path print	68	4	p3
525	Numbering Paths	UVA 125								0				Sol	graph, floyd, paths counting	68	4.5	p5
526	Frogger	UVA 534								0				Sol	graph, floyd, minimax or dsu	68	4.5	p4
527	Travel in Desert	UVA 10816								0				Sol	graph, floyd, binary search	68	4.5
528	Identifying Concurrent	UVA 334								0					graph, floyd	68	4.5
529	Greg and Graph	CF296-D2-D								0					graph, floyd	68	5	p2
530	Dima and Bacteria	CF400-D2-D								0					graph, floyd, dfs	68	5	p2
531	AlgoRace	CF189-D2-D								0				Sol	graph, floyd	68	5.25	p4
532	Antifloyd	UVA 10987								0				Sol	graph, floyd, antifloyd	68	5.5	p4
533	Unique World	UVA 10448								0				Video Solution - Dr Mostafa Saad	graph, floyd, dp	68	5.5	p2
534	Arbitrage	UVA 104								0				Sol	graph, floyd	68	6.25	p2
535	Potholers	SPOJ POTHOLE								0				Sol	graph, max-flow	71	3
536	Power Transmission	UVA 10330								0				Sol	graph, max-flow, vertex constraints	71	4
537	The Problem with the Problem Setter	UVA 10092								0					graph, max-flow, [direct bipartite is slow]	71	4.5	p3
538	Crimewave	UVA 563								0				Sol	graph, max-flow, vertex constraints, sparse graph, escape problem	71	5.5	p4
539	Intergalactic Map	SPOJ IM								0				Sol	graph, max-flow, [vertex disjoint path/ super sink / vertex split]	71	5.5	p2
540	A Plug for UNIX	UVA 753								0				Sol	graph, max-flow, impl	71	5.5	p2
541	March of the Penguins	UVA 12125								0				Sol	graph, max-flow, vertex constraints	71	6
542	Gopher II	UVA 10080								0				Sol	graph, max-flow, bipartite match	72	4
543	Software Allocation	UVA 259								0				Sol	graph, max-flow, bipartite match or impl	72	4.5
544		UVA 670								0				Sol	graph, max-flow, bipartite match	72	5	p3
545		UVA 1184								0				Sol	graph, max-flow, bipartite match, min path cover, [direct, =uva 1201, uva 12083]	72	5	p2
546		UVA 1194								0				Sol	graph, max-flow, bipartite match, min vertex cover, [konig’s theorem]	72	5.5	p4
547		UVA 10349								0				Sol - 2 ways	graph, max-flow, bipartite match, max independent set or dp_bitmasks	72	5.5	p3
548		UVA 11159								0				Sol	graph, max-flow, bipartite match, min path coverage, divisibility or min-cut	72	5.5	p3
549		UVA 12168								0				Sol	graph, max-flow, bipartite match, konig's theorem	72	6	p3
550		SPOJ QUEST4								0				Sol	graph, max-flow, bipartite match	72	6	p2
551		UVA 663								0				Sol	graph, max-flow, bipartite match	72	6	p1
552	Sabotage	UVA 10480								0				Sol	graph, max-flow, min-cut, [print, as in video]	74	4.5	p1
553	Unique Attack	ZOJ 2587								0				Sol	graph, max-flow, min-cut, cut edges	74	5	p2
554	Angry Programmer	UVA 11506								0				Sol	graph, max-flow, min-cut, vertex constraints	74	5.25	p3
555	PeopleYouMayKnow	SRM447-D1-500								0				Don't use DP. Check it later in editorial. Sol	graph, max-flow, min-cut or dp	74	5.5	p3
556		SPOJ COCONUTS								0				Sol	graph, max-flow, min-cut	74	6	p3
557		SRM465-D1-500								0				Sol	graph, max-flow, min-cut	74	6.25	p3
558	Highways	UVA 10147								0				Video Solution - Eng Mahmoud Adel	graph, mst	76	3
559	Is There A Second Way Left?	UVA 10462								0				Sol	graph, mst, 2nd mst	76	3
560		UVA 10843								0				Theory result to read	graph, mst, # of spanning trees of complete graph, n^(n-2)	76	4	p2
561	ACM contest and Blackout	UVA 10600								0				Video Solution - Eng Moaz Rashad	graph, mst, 2nd mst	76	4.5	p1
562	TimeTravellingSalesman	SRM492-D2-1000								0					graph, mst	76	5	p3
563		CF472-D12-D								0					graph, mst, [cases], [validate tree]	76	5	p3
564	RACING	UVA 1234								0				Sol	graph, mst, max spanning tree	76	5	p2
565	Arctic Network	UVA 10369								0					graph, mst, [prime fails]	76	5	p2
566	KingdomReorganization	SRM531-D2-1000								0					graph, mst	76	5	p1
567	Lazy Student	CF606-D2-D								0					graph, mst	76	5
568	ActivateGame	SRM470-D2-1000								0					graph, mst	76	5.25
569	Minimal Ratio Tree	LIVEARCHIVE 4326								0					graph, mst, combinatorics	76	6
570	The Bottom of a Graph	SPOJ BOTTOM								0				Sol	graph, scc	77	3
571	Test	UVA 10731								0				Sol	graph, scc	77	3.5
572	Dominos	UVA 11504								0				Sol	graph, scc or topological sort, [=uva 11770, ~=tju 2233]	77	4.5	p1
573		CF467-D2-D								0					graph, scc, hashing or dijkstra	77	5
574		SRM312-D1-500								0					graph, scc, greedy, [scc floyd]	77	5.5	p2
575	Proving Equivalences	UVA 12167								0				Sol	graph, scc	77	5.5
576		SRM608-D2-1000								0				Sol	graph, bf, floyd, cycles or max flow		5.75
577		SRM391-D2-1000								0					graph, scc, dp, [scc may help thoughts]	77	6	p3
578		SRM495-D1-500								0					graph, scc, probability, [more about probability]	77	6.25
579		CF403-D1-C								0					graph, scc, matrix or optimized bf, [using the property of the adjecency matrix for cycles, # of paths]	77	6.25	p5
580	Summer sell-off	CF810-D2-B								0				Video Solution - Solver to be (Java)	greedy	84	2	p2
581	Minimum Ternary String	CF1009-D12-B								0					greedy	84	2
582	Towers	CF479-D2-B								0					greedy	84	2
583	Semifinals	CF378-D2-B								0					greedy	84	2
584	The Child and Set	CF437-D2-B								0					greedy, sorting, bitmasks	84	2.5
585	Sort the Array	CF451-D2-B								0				Video Solution - Solver to be (Java)	greedy, sorting	84	2.5	p2
586	Mahmoud and a Triangle	CF766-D2-B								0				Video Solution - Solver to be (Java)	greedy	84	2.5	p3
587	Escape from Stones	CF265-D2-C								0					greedy, impl	84	3
588	Fixing Typos	CF363-D2-C								0					greedy, impl	84	3
589	Photographer	CF203-D2-C								0					greedy, sorting	84	3
590	Booking System	CF416-D2-C								0					greedy, sorting or dp	84	3.5	p3
591	Treasure Hunt	CF979-D2-B								0					greedy, [cases]	84	3.5	p1
592	Assemble	UVA 12124								0				Sol	greedy, bf or binary search	84	4
593		CODECHEF KSUM								0					greedy, sets, finding max k subarrays	84	4	p3
594		CF1064-D2-C								0					greedy, palindromes	84	4	p3
595		CF534-D2-D								0					greedy, set or grid compress	84	4	p2
596		CF1065-D2-C								0					greedy	84	4	p2
597		CF445-D2-C								0					greedy	84	4	p2
598	Geometric Progression	CF567-D2-C								0					greedy	84	4	p2
599		SRM481-D1-500								0					greedy, math	84	4	p2
600	Team	CF401-D2-C								0					greedy, constructive	84	4
601	Drazil and Factorial	CF515-D2-C								0				Video Solution - Dr Mostafa Saad	greedy, math	84	4
602	Hiring Staff	CF216-D2-C								0					greedy	84	4
603	Star sky	CF835-D2-C								0				Video Solution - Solver to be (Java)	greedy, prefix sum 2d	84	4
604	Vanya and Exams	CF492-D2-C								0					greedy, sorting	84	4
605		ZOJ 1200								0				Sol	greedy, simulation, priority queue	84	4.5	p3
606		CF729-D12-D								0					greedy, [pigeonhole principle]	84	4.5	p2
607	A and B and Interesting Substrings	CF519-D2-D								0					greedy, datastructures or dp	84	4.5	p2
608	Palindrome Transformation	CF486-D2-C								0					greedy, impl, [reverse thinking]	84	4.5	p2
609	Marina and Vasya	CF584-D2-C								0					greedy, constructive, [reverse thinking]	84	4.5	p1
610	Tennis Championship	CF735-D2-C								0					greedy, math, [reverse thinking]	84	4.5	p1
611	Anya and Ghosts	CF508-D2-C								0					greedy	84	4.5
612	Terse princess	CF148-D2-C								0				Video Solution - Eng Mohamed Nasser	greedy, constructive	84	4.5
613	Lucky Permutation	CF287-D2-C								0					greedy, constructive	84	4.5
614	Balls and Boxes	CF260-D2-C								0				Video Solution - Dr Mostafa Saad	greedy, impl	84	4.5
615		CF313-D2-C								0					greedy, constructive	84	5
616	Upgrading Array	CF402-D2-D								0					greedy or dp	84	5
617		SRM456-D2-1000								0					greedy, math, binary search	84	5	p3
618	End of Exams	CF94-D2-D								0					greedy, math, impl	84	5	p3
619	Queue	CF141-D2-C								0					greedy, constructive	84	5	p2
620		SGU 321								0				Sol	greedy, dfs , tree	84	5	p2
621	Dispute	CF242-D2-D								0					greedy, dfs or bfs, greedy	84	5	p2
622		SRM292-D1-500								0					greedy, graph	84	5	p2
623		CF1038-D2-D								0					greedy, impl	84	5	p2
624		UVA 12325								0				Prove your Solution	greedy, knapsack, math	84	5	p2
625		SRM405-D2-1000								0					greedy, math, strings	84	5	p2
626	Boring Partition	CF239-D2-D								0				Sol. Find proof (See editorial comments)	greedy, sortings	84	5	p2
627	No to Palindromes!	CF465-D2-C								0					greedy or bf	84	5
628		CF709-D2-D								0					greedy, math or pattern or segment tree	84	5.5	p3
629		CODECHEF BJUDGE								0					greedy, constructive	84	5.5	p3
630		CF1023-D12-E								0					greedy, interactive, constructive	84	5.5	p3
631	Russian Roulette	CF104-D2-D								0					greedy, math, adhoc	84	5.5	p3
632		CF1043-D12-E								0					greedy, sort, prefix sum, [maybe solve srm502-d1-500 first]	84	5.5	p3
633	DZY Loves Modification	CF447-D2-D								0				Prove	greedy or dp or datastructures	84	5.5	p2
634		AtCoder002-AGC-C								0					greedy, datastructures, stl	84	5.5	p2
635	Of Zorcs and Axes	CF101149-GYM-G								0				Sol	greedy or dijkstra, [multiple start nodes]	84	5.5	p1
636	Robin Hood	CF672-D2-D								0					greedy, binary search, [strict time]	84	5.5
637		SRM453.5-D2-1000								0					greedy, math, sorting or dp	84	6	p3
638		CF867-D12-E								0					greedy, observations	84	6	p3
639		SRM392-D1-1000								0					greedy, bf, mask, impl	84	6	p2
640	Tennis Game	CF496-D2-D								0					greedy, bf, impl	84	6
641	Wasted Time	CF127-D2-A								0					impl	86	1.5
642	Juicer	CF709-D2-A								0				Video Solution - Solver to be (Java)	impl	86	1.5
643	Anton and Polyhedrons	CF785-D2-A								0				Video Solution - Solver to be (Java)	impl	86	1.5
644	Valera and X	CF404-D2-A								0				Video Solution - Solver to be (Java)	impl, stl, set	86	1.5
645	Tanya and Postcard	CF518-D2-B								0					impl	86	2
646	Mike and Fun	CF548-D2-B								0					impl	86	2
647	Covered Path	CF534-D2-B								0					impl	86	2
648	Print Check	CF631-D2-B								0					impl	86	2
649	Lucky Mask	CF146-D2-B								0					impl	86	2
650	Special Offer! Super Price 999 Bourles!	CF219-D2-B								0					impl	86	2	p2
651	Non-square Equation	CF233-D2-B								0					impl	86	2
652	Flag Day	CF357-D2-B								0					impl	86	2
653	Sereja and Mirroring	CF426-D2-B								0					impl	86	2
654	Little Pony and Sort by Shift	CF454-D2-B								0					impl	86	2
655	MUH and Important Things	CF471-D2-B								0					impl	86	2
656	Gena's Code	CF614-D2-B								0					impl	86	2
657	Opposites Attract	CF131-D2-B								0					impl	86	2
658	Little Pigs and Wolves	CF116-D2-B								0					impl	86	2
659	Cosmic Tables	CF222-D2-B								0					impl	86	2
660	Prime Matrix	CF271-D2-B								0					impl	86	2
661	Wet Shark and Bishops	CF621-D2-B								0				Video Solution - Eng Mahmoud Mabrok	impl	86	2
662		CF1030-D12-B								0					impl, math	86	2
663	Facetook Priority Wall	CF75-D2-B								0					impl, sorting	86	2
664	Queue	CF490-D2-B								0					graph, constructive, adhoc	86	3	p2
665	Hanoi Tower	TIMUS 1054								0				Sol	impl, recursion, tower of hanoi	86	3	p2
666	Treasure	CF495-D2-C								0					impl	86	4
667	Game	CF69-D2-C								0					impl	86	4
668	Accordian Patience	UVA 127								0				Video Solution - Eng Moaz Rashad	impl	86	4	p1
669	Beautiful Sets of Points	CF268-D2-C								0					impl, constructive	86	4
670	Appleman and Toastman	CF462-D2-C								0				Sol	impl, sorting, huffman coding	86	4
671	Three Logos	CF581-D2-D								0					impl	86	4.5	p2
672	Guess Your Way Out!	CF507-D2-C								0				Video Solution - Dr Mostafa Saad	impl, math	86	4.5	p2
673		CF1042-D12-D								0					impl or segment tree or bit	86	5	p2
674	Mafia	CF349-D2-C								0					impl, math	86	5	p2
675	Unusual Product	CF405-D2-C								0					impl, math, [symbolic thinking]	86	5	p1
676		CF101187-GYM-F								0				Sol	impl	86	5.25	p2
677	Special Grid	CF435-D2-D								0					impl, greedy	86	5.5	p2
678	Theatre Square	CF1-D12-A								0				Video Solution - Solver to be (Java)	math	87	1.5
679		CF1204-D2-A								0				Video Solution - Dr Mostafa Saad	math, log, binary, pattern observation	87	2	p2
680	Balanced Rating Changes	CF1237-D12-A								0					math, analysis	87	2	p3
681	The Drunk Jailer	LIVEARCHIVE 2557								0				Find a formula	math or bf	87	2	p1
682	Product	UVA 10106								0				Video Solution - Eng Youssef El Ghareeb. Don't solve using big integer	math	87	2
683	To Carry or not to Carry	UVA 10469								0				Sol	math	87	2
684	Adding Reversed Numbers	UVA 713								0				Don't use big integer class. Write simple array computations	math	87	2
685	Dreamoon and WiFi	CF476-D2-B								0				Video Solution - Eng Mohamed Adel	math, combinatorics, bitmasks	87	2	p3
686		CF1051-D2-B								0					math	87	2.5
687	Escape	CF148-D2-B								0					math	87	2.5
688	Restoring Painting	CF675-D2-B								0					math	87	2.5
689	Caisa and Pylons	CF463-D2-B								0				Video Solution - Eng Muntaser Abukadeja	math, impl	87	2.5
690	T-primes	CF230-D2-B								0					math, numberr theory	87	2.5
691		CODECHEF GCDMOD								0				Sol uses __int128 to avoid overflow	math, __int128	87	3	p3
692	Polycarpus' Dice	CF534-D2-C								0				Sol	math, greedy, careful impl	87	3	p3
693		CF1059-D2-C								0					math, constructive	87	4	p3
694	Number Sequence	UVA 10706								0					math	87	4	p2
695	Divisible by Seven	CF376-D2-C								0					math, number theory	87	4	p2
696	Fractions Again?!	UVA 10976								0				Sol to read	math, number theory	87	4	p1
697	Plant	CF186-D2-C								0					math	87	4
698	Magic Formulas	CF424-D2-C								0					math	87	4
699	Duff in Love	CF588-D2-B								0					math	87	4
700	Light, more light	UVA 10110								0				Video Solution - Eng Amr Saud	math	87	4
701	Power of Cryptography	UVA 113								0				Sol to read	math, log, [double limits]	87	4	p3
702	Round Table Knights	CF71-D2-C								0					math or dp	87	4
703	Lucky Permutation Triple	CF304-D2-C								0					math, constructive	87	4
704	Vasya and Petya's Game	CF577-D2-C								0					math, impl	87	4	p2
705		CF1239-D1-A								0					math, pattern	87	4.25	p3
706	The ? 1 ? 2 ? ... ? n = k problem	UVA 10025								0					math or binary search	87	4.5	p2
707	Secrets	CF334-D2-C								0					math	87	4.5
708	The Meaningless Game	CF834-D2-C								0				Video Solution - Solver to be (Java)	math	87	4.5
709	Find Maximum	CF353-D2-C								0					math, bits	87	4.5
710	Plus and Square Root	CF716-D2-C								0					math, constructive	87	4.5
711	Bear and Prime 100	CF680-D2-C								0					math, constructive, interactive	87	4.5
712		CF1040-D2-D								0					math, randomization, binary search, interactive	87	5	p4
713	Count Good Substrings	CF451-D2-D								0					math, adhoc, palyndromes, [short code]	87	5	p3
714	Tavas and Karafs	CF535-D2-C								0					math, binary search	87	5	p2
715	As Fast As Possible	CF701-D2-D								0					math, binary search, precision	87	5	p2
716		CF955-D2-C								0					math, number theory	87	5	p2
717		CF45-D12-D								0					math, randomization	87	5	p2
718	Ciel and Robot	CF322-D2-C								0					math, impl, [cases]	87	5	p1
719	Crazy Town	CF499-D2-C								0				Video Solution - Dr Mostafa Saad	math, number theory, greedy	87	5	p1
720	About Bacteria	CF199-D2-C								0					math	87	5
721	DNA Alignment	CF520-D2-C								0					math	87	5
722	Predict Outcome of the Game	CF451-D2-C								0					math, equations, impl	87	5	p2
723	Analyzing Polyline	CF195-D2-D								0					math, sortings	87	5
724		CF1016-D12-D								0					math, xor, bitwise, constructive	87	5.25	p3
725	Quantity of Strings	CF151-D2-D								0					math, repeated squaring, graph	87	5.5	p4
726	How many trees?	CF9-D2-D								0					math or dp_tree	87	5.5	p2
727	The Errant Physicist	UVA 126								0				Sol	math	87	5.5
728	Software CRC	UVA 128								0				Video Solution - Eng Moaz Rashad	math	87	5.5
729	Jeff and Furik	CF352-D2-D								0				Sol	math or dp_expectation	87	6	p3
730	Magical Array	CF84-D2-B								0					math, combinatorics	89	2.5
731	Chocolate	CF617-D2-B								0				Video Solution - Eng Yahia Ashraf	math, combinatorics	89	2.5
732	Colorful Field	CF79-D12-B								0				Video Solution - Solver to be (Java)	math, mod	89	2.5	p3
733	The World is a Theatre	CF131-D2-C								0				Video Solution - Eng Youssef Ali	math, combinatorics	89	4
734	Pocket Book	CF152-D2-C								0					math, combinatorics	89	4
735	Black and white painting	UVA 11231								0				Video Solution - Eng Amr Saud	math, combinatorics, counting	89	4
736		CF758-D2-C								0					math, combinatorics	89	5	p3
737		CF459-D2-C								0					math, combinatorics, constructive	89	5	p3
738		HACKR ajourney								0					math, combinatorics, first/last k digits 2^n, [=uva 11029]	89	5	p3
739	Shaass and Lights	CF294-D2-C								0				Video Solution - Dr Mostafa Saad	math, combinatorics	89	5.5	p4
740		CF869-D2-C								0					math, combinatorics or dp_counting	89	5.5	p3
741	Tourist Problem	CF340-D2-C								0					math, combinatorics, impl	89	5.5	p1
742	Fox Dividing Cheese	CF371-D2-B								0				Video Solution - Eng Abanob Ashraf	math, factorial	94	2.5
743	Permalex	UVA 153								0				Sol	math, factorial, permutations, dublicates, factoradic index	94	4.5	p3
744	Prime Factors	UVA 583								0					math, factorization	95	2
745	Easy Number Challenge	CF236-D2-B								0				Video Solution - Eng Yahia Ashraf	math, factorization	95	3
746	Mr. Azad and his Son	UVA 10490								0				Sol to read	math, factorization	95	3
747	Prime Land	UVA 516								0					math, factorization	95	3
748	Perfect P-th Powers	UVA 10622								0				Video Solution - Eng Moaz Rashad	math, factorization	95	4	p1
749	Factovisors	UVA 10139								0				Sol to read	math, factorization, primes, [factorize x!]	95	4
750		CF1047-D2-C								0					math, factorization	95	4.5	p3
751	DDF	UVA 547								0					math, factorization, divisors sum, multiview	95	4.5
752		UVA 10174								0					math, factorization, case analysis	95	5
753	Multifactorials	UVA 11347								0					math, factorization, divisors sum	95	5
754		CF1033-D12-D								0					math, factorization	95	5.5	p3
755	Remainders Game	CF688-D2-D								0					math, factorization, gcd, lcm, observations	95	6	p4
756	Primitive Root	SPOJ PROOT								0				Sol	math, factorization, primitve roots	95	6.25	p4
757		UVA 12869								0				Sol	math, formula	98	5	p2
758	Combinations	UVA 369								0					math, gcd, comb formula	99	2
759	Pi	UVA 412								0				Video Solution - Eng Mohamed Adel	math, gcd	99	3
760	Trains	CF88-D2-C								0				Video Solution - Solver to be (Java)	math, gcd or adhoc	99	4
761	Mint	UVA 10717								0				Sol	math, gcd, lcm	99	4
762	The Big Race	CF592-D2-C								0					math, gcd, lcm, [overflow]	99	4.5	p3
763	LCM Cardinality	UVA 10892								0					math, gcd, lcm	99	4.5
764	Rational Resistance	CF344-D2-C								0					math, gcd	99	5	p3
765	LCM Challenge	CF236-D2-C								0					math, gcd, lcm	99	5
766		CF1010-D1-C								0					math, gcd, mod, number theory	99	5.5	p1
767		AtCoder026-AGC-B								0				Sol	math, gcd, cases	99	6	p3
768		SPOJ EASYMATH								0				Sol	math, inclusion-exclusion, lcm	101	3
769	Hamburgers	CF371-D2-C								0					math, inclusion-exclusion, binary search	101	3
770	The Lottery	UVA 10325								0				Video Solution - Eng Amr Bahaa	math, inclusion-exclusion, gcd, overflow	101	4
771		CF101933-GYM-K								0				Sol	math, inclusion-exclusion	101	4
772		CF372-D1-B								0					math, inclusion-exclusion	101	5.75	p2
773		SPOJ MSKYCODE								0				Sol	math, inclusion-exclusion	101	6	p3
774		CF101992-GYM-D								0				Sol	math, inclusion-exclusion	101	6	p3
775	Equation	UVA 727								0					math, infix to postfix	102	4
776	Farm	TIMUS 1349								0				Know Fermat’s Last Theorem (Ignore proof)	math, math_adhoc, fermat last theorm	104	2	p2
777	Summation of Polynomials	UVA 10302								0					math, math_adhoc, polynomials	104	2
778		HACKR tower-3-coloring								0				Learn Fermat's little theorem	math, math_adhoc, fermat little theorm	104	3	p1
779	R U Kidding Mr. Feynman?	UVA 10509								0					math, math_adhoc, patterns	104	3.5
780	Polly the Polynomial	UVA 498								0					math, math_adhoc, polynomials	104	3.5
781	Jzzhu and Sequences	CF450-D2-B								0					math, matrix, matrix exponient	105	2.5
782	Mirror, Mirror	UVA 466								0					math, matrix, rotate, reflect, impl	105	3	p1
783	Clear Symmetry	CF202-D2-C								0					math, matrix, bf	105	4
784	End of Fun	SPOJ DCEPC12E								0					math, matrix	105	4.5
785	Uniform Generator	UVA 408								0				Video Solution - Eng Yahia Ashraf	math, mod	109	3
786	Be Efficient	UVA 11155								0					math, mod	109	5
787	Quiz	CF337-D2-C								0					math, mod, pow, greedy	109	5.5	p3
788	Cows and Cars	UVA 10491								0				Revise Probability	math, probability, formula, fraction style	113	2
789	What is the Probability?	UVA 10056								0				Sol	math, probability	113	3
790		HACKR sherlock-and-probability								0				Sol	math, probability, fractions style	113	3
791	Probability|Given	UVA 11181								0				Sol	math, probability, conditional probability	113	4	p2
792	Another lottery	UVA 11628								0				Sol	math, probability, fraction style, gcd	113	4
793	Mushroom Scientists	CF186-D2-D								0					math, probability or log, ternary search	113	5	p4
794		CF101864-GYM-A								0				Sol	math, probability, combinatorics, math	113	5	p2
795		SRM537-D2-1000								0					math, probability, graph, cycle	113	5	p2
796	Airplane	UVA 12461								0				Sol	math, probability, greedy	113	5	p1
797	Probability	UVa 11346								0				Sol	math, probability, integration	113	5.25	p3
798		SRM285-D1-500								0					math, probability, bf or dp	113	5.5
799		CF26-D12-D								0				Sol - must read	math, probability, factorial, logarithm, combinatorics, reflection principle, [solve first spoj funprob]	113	5.5	p3
800		CF442-D1-B								0					math, probability, sorting	113	5.5	p3
801		SRM352-D2-1000								0					math, probability, recursion, precision	113	5.5
802		CF513-D12-C								0				Sol	math, probability, bitmasks or dp_probability, [no editorial]	113	6	p3
803		UVA 557								0				Sol	math, probability, combinatronics	113	6
804		SPOJ FUNPROB								0				Sol	math, probability, formula	113	6
805		CF163-D12-C								0					math, probability	113	6.25
806		CF110-D2-D								0					math, probability, combinatorics	113	6.25
807	God, Save me	UVA 10777								0				Sol	math, probability, expectation or dp_probability	114	4
808		SRM458-D2-500								0					math, probability, expectation, bitmasks	114	4
809		CF839-D2-C								0					math, probability, expectation, dfs	114	4
810		HACKR lazy-sorting								0				Revise Expected Value	math, probability, expectation, permutation	114	4
811	Andrey and Problem	CF443-D2-D								0				Sol	math, probability, expectation, greedy or dp	114	4.5	p3
812	Wet Shark and Flowers	CF621-D2-C								0					math, probability, expectation	114	4.5
813	Little Pony and Expected Maximum	CF454-D2-C								0					math, probability, expectation, pattern	114	4.5
814		HACKR vertical-sticks								0					math, probability, expectation, linearity of expectation	114	5	p3
815		SRM577-D1-250								0					math, probability, expectation, linearity of expectation or dp_probability or greedy	114	5	p3
816		SRM470-D1-500								0					math, probability, expectation	114	5.5	p2
817		CF500-D12-D								0					math, probability, expectation, dfs	114	5.5	p2
818		CF280-D1-C								0					math, probability, expectation, dfs or dp	114	6	p3
819	Playlist	CF268-D2-E								0				Sol	math, probability, expectation, formula, greedy or dp_probability	114	6	p3
820	Big Mod	UVA 374								0					math, repeated squaring, mod, direct	115	3
821	Twin Primes	UVA 10394								0					math, sieve	117	3
822	Factorial Factors	UVA 884								0					math, sieve, factorization	117	3.5
823	Psycho	SPOJ PSYCHON								0					math, sieve, factorization, tricky big # test cases	117	4	p2
824	Summation of Four	UVA 10168								0				Video Solution - Eng Moaz Rashad	math, sieve	117	4
825	Primes or Palindromes?	CF569-D2-C								0					math, sieve, palindromes	117	4.5	p3
826	Divisibility of Factors	UVA 10484								0				Sol to read	math, sieve	117	4.5	p2
827		LIVEARCHIVE 4008								0					math, sieve, [last non zero digit of permutations]	117	5.5	p2
828	The New Rule in Euphomia	UVA 10742								0				Sol	math, sieve, binary search	117	5.5
829	Sum-up the Primes	UVA 10419								0				Sol	math, sieve, dfs, dp	117	5.5
830	Flying Saucer Segments	CF227-D2-C								0					math, summations	118	4.5	p3
831	Dreamoon and Sums	CF476-D2-C								0				Video Solution - Dr Mostafa Saad	math, summations, [in my videos]	118	5	p3
832		CF201-D1-B								0					math, summations, seperate summations or ternary or analytical, [bad texr]	118	5	p2
833	Spongebob and Squares	CF599-D2-D								0					math, summations, bf, [overflow]	118	6	p2
834	Largest Rectangle in a Histogram	SPOJ HISTOGRA								0				Sol. Don't implement as adhock/greedy/Pure STL. Use a data structure.	rmq, d&c or datastructure, [largest rectangle in a histogram, ~=uva 12462 = srm337-d1-500 = uva 11871 = spoj ctgame]	122	4.5	p4
835	R2D2 and Droid Army	CF514-D2-D								0				Use rmq	rmq, binary search or bit or two pointers	122	5	p3
836	Friends and Subsequences	CF689-D2-D								0					rmq, sparce table, binary search or datastructures or bit or segment tree	122	5	p3
837	Pair of Numbers	CF359-D2-D								0				Sol	rmq, binary search, gcd, analysis or stack	122	5.5	p2
838	Square Subsets	CF448-D2-C								0					search, d&c, greedy	123	4.5
839	Potentiometers	LIVEARCHIVE 2191								0					segment tree, [interval sum query]	125	2	p3
840	Interval Product	UVA 12532								0					segment tree or bit, [~=tju 3440]	125	2
841	Halt The War	SPOJ CDC12_H								0					segment tree	125	3.5
842	Multiples of 3	SPOJ MULTQ3								0				Sol	segment tree, lazy propagation	125	4	p3
843	Horrible Queries	SPOJ HORRIBLE								0					segment tree, lazy propagation or bit	125	4	p1
844	Counting Primes	SPOJ CNTPRIME								0					segment tree, sieve	125	4	p1
845	Maximum Sum	SPOJ KGSS								0					segment tree, [max pair sum]	125	4.5	p3
846	A Famous City	SPOJ CITY2								0				Sol	segment tree or adhoc	125	4.5	p2
847	Help R2-D2!	SPOJ HELPR2D2								0					segment tree, impl	125	4.5	p2
848	Light Switching	SPOJ LITE								0					segment tree, lazy propagation, [edu]	125	4.5	p1
849	Circular RMQ	CF52-D12-C								0					segment tree, lazy propagation, circular	125	4.5
850	Brackets	SPOJ BRCKTS								0				Sol	segment tree, [bracket balance, 2 values in segtree]	125	5	p3
851	Can you answer these queries I	SPOJ GSS1								0				Sol	segment tree, [max sum, part of gss series: http://blog.csdn.net/bhiaibogf/article/details/50719199]	125	5	p3
852	RMQ with Shifts	UVA 12299								0				See sscanf and sprintf usage	segment tree, rmq shift	125	5	p3
853	AND Rounds	SPOJ ANDROUND								0				Sol	segment tree	125	5	p2
854	Ahoy, Pirates!	UVA 11402								0				Sol	segment tree, lazy propagation or datastructures	125	5	p2
855	Present	CF460-D2-C								0					segment tree, lazy propagation, greedy or binary search	125	5	p2
856	Fence Obstacle Course	PKU 2374								0				Sol	segment tree, dp or dp	125	5	p1
857		CF61-D2-E								0					segment tree or wavelet tree, [boring, inversion count, ~=cf459-d2-d]	125	5	p1
858	Can you answer these queries III	SPOJ GSS3								0					segment tree, [max sum+updates, spoj gss1 first]	125	5.5	p5
859	Sum of Squares with Segment Tree	SPOJ SEGSQRSS								0				Sol	segment tree, lazy propagation, impl, [weak testcases, sum of squares]	125	5.5	p4
860		CF380-D1-C								0					segment tree, [~=spoj gss5], [spoj gss1]	125	5.5	p3
861	Can you answer these queries IV	SPOJ GSS4								0				Sol	segment tree or bit, [classical]	125	5.5	p2
862	SKYLINE	UVA 1232								0				Sol	segment tree, [skyline overlap, tle]	125	5.5
863	Ordering the Soldiers	SPOJ ORDERS								0				Sol	segment tree, kth element or bit or bst or treap or datastructure	125	5.75	p3
864		SPOJ IOPC1207								0				Sol	segment tree, lazy propagation, [handle dimensions independently]	125	6	p3
865		SPOJ BRCKTS2								0				Sol	segment tree, prefix sums or adhoc, recursion	125	6	p3
866	Bookworm	TIMUS 1638								0				Can you get AC first submission	simulation, formula, [was, tricky]	126	2	p2
867	Taxi	TIMUS 1607								0				Can you get AC first submission?	simulation, tricky	126	2	p1
868	The Blocks Problem	UVA 101								0				Sol	simulation	126	3
869	Oulipo	PKU 3461								0					string processing, kmp, [count word frequency]	130	2
870	A Needle in the Haystack	SPOJ NHAY								0					string processing, kmp, [find words positions]	130	3
871	Finding the Tesserect	SPOJ TESSER								0					string processing, kmp	130	4	p4
872	Period	SPOJ PERIOD								0					string processing, kmp, period max or suffix array	130	4.5	p3
873	Prefixes and Suffixes	CF432-D2-D								0					string processing, kmp or z-function	130	5	p3
874	Tavas and Malekas	CF535-D2-D								0					string processing, kmp or z-function, [~cf127-d2-d]	130	5	p3
875		CF1147-D1-B								0					string processing, kmp	130	5.25	p2
876	Messenger	CF631-D2-D								0					string processing, kmp	130	5.5	p3
877		CF1138-D2-D								0					string processing, kmp	130	5.5	p2
878		FbHkrCup 18-RQ-C								0					string processing, kmp	130	5.5	p1
879		UVA 11475								0				Sol	string processing, kmp	130	5.5
880	Phone List	SPOJ PHONELST								0					string processing, trie	135	3.5
881	Cellphone Typing	UVA 12526								0					string processing, trie	135	4.5	p3
882	Disk Tree	UVA 1556								0					string processing, trie, trie using map, pretty print trie, fast cin	135	4.5	p3
883	Search in the dictionary!	SPOJ DICT								0					string processing, trie	135	4.5	p2
884	Vasiliy's Multiset	CF706-D2-D								0					string processing, trie	135	5	p2
885		LiveArchive 8015								0				Sol	string processing, trie	135	5.25	p4
886		CF842-D2-D								0					string processing, trie, [xor]	135	5.5	p3
887		CF665-D12-E								0					string processing, trie	135	5.5	p3
888		LiveArchive 4682								0				Sol	string processing, trie	135	5.5
889		CF455-D1-B								0					string processing, trie	135	5.5
890	Spider's Web	CF216-D2-D								0					two pointers or adhoc	138	3
891	Points on Line	CF252-D2-C								0					two pointers or binary search, combinatorics	138	4	p2
892	Hometask	CF155-D2-C								0					two pointers or dp	138	4.5
893		CF1043-D12-D								0					two pointers, [different solutions]	138	5	p3
894		CODECHEF REDCGAME								0					two pointers	138	5	p2
895	Sereja ans Anagrams	CF368-D2-D								0				Sol	two pointers or adhoc or kmp-like	138	5	p2
896	Vasya and String	CF676-D2-C								0					two pointers	138	5
897	To Add or Not to Add	CF231-D2-C								0					two pointers, binary search	138	5
898	Two Strings	CF224-D2-D								0				Sol	two pointers	138	5.5	p3
899	Chips	CF334-D2-D								0					two pointers or adhoc	138	5.5	p2
900		CF309-D12-B								0					two pointers, dp or greedy	138	5.5	p2
901	Maximum Xor Secondary	CF281-D2-D								0					two pointers or segment tree	138	5.5
902
903								Caregory Code to match with Col O				Learning Order		Video
904	1- Column K (learning order) is same order as the sheets A-D 2- You may follow this order to learn 3- Column G is the category code as in Column O 4- Example: You learned DFS. Codes for it are 60, 61, 63. Go and solve as u want from the problems with these codes. E.g. UVA 10461											1		Watch - Approaching Problem Statement
905												2		Watch - Thinking - On papers Not on PC
906												3		Watch - Measuring Algorithms Perfromance - 1
907												4		Watch - Elementary Math - Introduction
908								109				5		Watch - Number Theory - Modular Arithmatic
909								89, 101				6		Watch - Combinatorics - Counting Principles
910												7		Watch - Graph Theory - Intro
911								60,61,63				8		Watch - Graph Theory - DFS
912								45				9		Watch - Computational Geometry - Intro
913								45				10		Watch - Computational Geometry - Point and Vector
914								6				11		Watch - Search Techniques - Binary Search
915												12		Watch - Thinking - Problem Simplification
916												13		Watch - Thinking - Brainstorm - Rank - Approach
917												14		Study STL
918								89, 101				15		Watch - Combinatorics - Permutations and Combinations - 1
919								89, 101				16		Watch - Combinatorics - Permutations and Combinations - 2
920												17		Watch - Training-Secrets of Success
921												18		Watch - Training-Secrets of Success
922								99				19		Watch - Number Theory - Fib, GCD, LCM, Pow
923												20		Watch - Prefix Sum
924								57				21		Watch - Graph Theory - BFS
925												22		Review - Recursion
926								10				23		Watch - DP - intro 1
927								10				24		Watch - DP - intro 2
928								45				25		Watch - Computational Geometry - Complex Number and 2D Point
929								48				26		Watch - Computational Geometry - Lines and Distances
930												27		Watch - Focused and Diffused Thinking
931								65,76				28		Watch - Graph Theory - MST - Kruskal
932								84				29		Watch - Intro to Greedy
933												30		Watch - Thinking - Concretely - Symbolically - Pictorially
934												31		Watch - Thinking - Problem Constraints
935								117				32		Watch - Number Theory - Primes
936												33		Watch - Algebra - Number Bases and Polynomials
937												34		Watch - Algebra - Patterns in Sequences
938								118				35		Watch - Algebra - Summations
939												36		Watch - Algebra - Basic Matrix Operations
940												37		Watch - Thinking - Problem Abstraction
941												38		Watch - Thinking - Problem Reverse
942								3				39		Watch - Search Techniques - Backtracking
943												40		Review bitmasking
944								10				41		Watch - DP - Subset Style
945								32				42		Watch - DP - Consecutive Ranges Style
946								32				43		Watch - DP - Nested Ranges Style
947								32				44		Watch - DP - General Ranges Style
948												45		Watch - Thinking - Incrementally
949												46		Watch - Thinking - Problem Domain re-interpretation
950								95				47		Watch - Number Theory - Factorization
951								113				48		Watch - Probability - First 9 videos
952												49		Watch - Thinking - Search Space and Output Analysis
953												50		Watch - Thinking - Observations Discovery
954								41				51		Watch - Game Theory - Intro
955												52		Watch - Thinking - Misc - Solution Verification - Implementation
956								64				53		Watch - Graph Theory - Dijkstra
957								48				54		Watch - Computational Geometry - Lines Intersections
958								47				55		Watch - Computational Geometry - Circles
959												56		Watch - Thinking - Error Inspection - History - Contest Strategy
960								15				57		Watch - DP - Building Output
961								18				58		Watch - DP - Counting
962												59		Watch - Thinking - Let's Put All Together
963								37				60		Watch - DP - Table Method
964								68				61		Watch - Graph Theory - Floyd Warshal
965												62		Watch - Measuring Algorithms Perfromance - 2
966								62				63		Watch - Graph Theory - Tree Diameter and Isomorphism
967								114				64		Watch Video - Expected Value
968								122, 125				65		Watch - Data Structures - Segment Tree (2 vid)
969								38				66		Reading: DP on Trees
970								138				67		Watch - Two pointers technique
971								29				68		Watch - DP - Probability
972								11				69		Watch - DP - Masks (2 vid)
973								135				70		Watch - String Processing - Trie
974								36				71		Watch - DP - Sub-rectangle style
975								130				72		Watch - String Processing - KMP (2 vid)
976								23				73		Watch - DP - Games (2 vid)
977								49				74		Watch - Computational Geometry - Simple and Convex Polygons
978								49				75		Watch - Computational Geometry - Polygon Area - Centroid - Cut
979								49				76		Watch - Computational Geometry - Point in polygon
980								71,72,74				77		Watch - Graph Theory - Maximum Flow (2 vid)
981								77				78		Watch - Graph Theory - SCC (2 vid)